/*
 * Unit tests for (a few) ddraw surface functions
 *
 * Copyright (C) 2005 Antoine Chavasse (a.chavasse@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <assert.h>
#include "wine/test.h"
#include "ddraw.h"

static LPDIRECTDRAW lpDD = NULL;

static void CreateDirectDraw(void)
{
    HRESULT rc;

    rc = DirectDrawCreate(NULL, &lpDD, NULL);
    ok(rc==DD_OK,"DirectDrawCreate returned: %lx\n",rc);

    rc = IDirectDraw_SetCooperativeLevel(lpDD, NULL, DDSCL_NORMAL);
    ok(rc==DD_OK,"SetCooperativeLevel returned: %lx\n",rc);
}


static void ReleaseDirectDraw(void)
{
    if( lpDD != NULL )
    {
        IDirectDraw_Release(lpDD);
        lpDD = NULL;
    }
}

static void MipMapCreationTest(void)
{
    LPDIRECTDRAWSURFACE lpDDSMipMapTest;
    DDSURFACEDESC ddsd;
    HRESULT rc;

    /* First mipmap creation test: create a surface with DDSCAPS_COMPLEX,
       DDSCAPS_MIPMAP, and DDSD_MIPMAPCOUNT. This create the number of
        requested mipmap levels. */
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT | DDSD_MIPMAPCOUNT;
    ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE | DDSCAPS_COMPLEX | DDSCAPS_MIPMAP;
    U2(ddsd).dwMipMapCount = 3;
    ddsd.dwWidth = 128;
    ddsd.dwHeight = 32;
    rc = IDirectDraw_CreateSurface(lpDD, &ddsd, &lpDDSMipMapTest, NULL);
    ok(rc==DD_OK,"CreateSurface returned: %lx\n",rc);

    /* Check the number of created mipmaps */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    rc = IDirectDrawSurface_GetSurfaceDesc(lpDDSMipMapTest, &ddsd);
    ok(rc==DD_OK,"GetSurfaceDesc returned: %lx\n",rc);
    ok(ddsd.dwFlags & DDSD_MIPMAPCOUNT,
        "GetSurfaceDesc returned no mipmapcount.\n");
    ok(U2(ddsd).dwMipMapCount == 3, "Incorrect mipmap count: %ld.\n",
        U2(ddsd).dwMipMapCount);

    /* Destroy the surface. */
    IDirectDrawSurface_Release(lpDDSMipMapTest);


    /* Second mipmap creation test: create a surface without a mipmap
       count, with DDSCAPS_MIPMAP and without DDSCAPS_COMPLEX.
       This creates a single mipmap level. */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
    ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE | DDSCAPS_MIPMAP;
    ddsd.dwWidth = 128;
    ddsd.dwHeight = 32;
    rc = IDirectDraw_CreateSurface(lpDD, &ddsd, &lpDDSMipMapTest, NULL);
    ok(rc==DD_OK,"CreateSurface returned: %lx\n",rc);

    /* Check the number of created mipmaps */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    rc = IDirectDrawSurface_GetSurfaceDesc(lpDDSMipMapTest, &ddsd);
    ok(rc==DD_OK,"GetSurfaceDesc returned: %lx\n",rc);
    ok(ddsd.dwFlags & DDSD_MIPMAPCOUNT,
        "GetSurfaceDesc returned no mipmapcount.\n");
    ok(U2(ddsd).dwMipMapCount == 1, "Incorrect mipmap count: %ld.\n",
        U2(ddsd).dwMipMapCount);


    /* Third mipmap creation test: create a surface with DDSCAPS_MIPMAP,
        DDSCAPS_COMPLEX and without DDSD_MIPMAPCOUNT.
       It's an undocumented features where a chain of mipmaps, starting from
       he specified size and down to the smallest size, is automatically
       created.
       Anarchy Online needs this feature to work. */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
    ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE | DDSCAPS_COMPLEX | DDSCAPS_MIPMAP;
    ddsd.dwWidth = 128;
    ddsd.dwHeight = 32;
    rc = IDirectDraw_CreateSurface(lpDD, &ddsd, &lpDDSMipMapTest, NULL);
    ok(rc==DD_OK,"CreateSurface returned: %lx\n",rc);

    /* Check the number of created mipmaps */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    rc = IDirectDrawSurface_GetSurfaceDesc(lpDDSMipMapTest, &ddsd);
    ok(rc==DD_OK,"GetSurfaceDesc returned: %lx\n",rc);
    ok(ddsd.dwFlags & DDSD_MIPMAPCOUNT,
        "GetSurfaceDesc returned no mipmapcount.\n");
    ok(U2(ddsd).dwMipMapCount == 6, "Incorrect mipmap count: %ld.\n",
        U2(ddsd).dwMipMapCount);


    /* Fourth mipmap creation test: same as above with a different texture
       size.
       The purpose is to verify that the number of generated mipmaps is
       dependent on the smallest dimension. */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT;
    ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE | DDSCAPS_COMPLEX | DDSCAPS_MIPMAP;
    ddsd.dwWidth = 32;
    ddsd.dwHeight = 64;
    rc = IDirectDraw_CreateSurface(lpDD, &ddsd, &lpDDSMipMapTest, NULL);
    ok(rc==DD_OK,"CreateSurface returned: %lx\n",rc);

    /* Check the number of created mipmaps */
    memset(&ddsd, 0, sizeof(DDSURFACEDESC));
    ddsd.dwSize = sizeof(ddsd);
    rc = IDirectDrawSurface_GetSurfaceDesc(lpDDSMipMapTest, &ddsd);
    ok(rc==DD_OK,"GetSurfaceDesc returned: %lx\n",rc);
    ok(ddsd.dwFlags & DDSD_MIPMAPCOUNT,
        "GetSurfaceDesc returned no mipmapcount.\n");
    ok(U2(ddsd).dwMipMapCount == 6, "Incorrect mipmap count: %ld.\n",
        U2(ddsd).dwMipMapCount);

    /* Destroy the surface. */
    IDirectDrawSurface_Release(lpDDSMipMapTest);
}


START_TEST(dsurface)
{
    CreateDirectDraw();
    MipMapCreationTest();
    ReleaseDirectDraw();
}